226 [October, 



36. D. andalusiacus Strobl : on August 24th, 1885, I caught at 

 Slaptoti Lea, in extreme South Devon, three males and one 

 female of a Dolichopus which I could not identify, and which 

 I consequently included in my "List" of 1888 under the 

 catalogue name of I). Scott i, as I was then collecting in the 

 company of the late John Scott. Being convinced that they 

 represented an undescribed species I sought for more speci- 

 mens in two subsequent seasons, but unsuccessfully, although 

 I went many miles in search of it, but on September 6th, 

 1889, and on succeeding days 1 found it in profusion within 

 a few yards of the Sands Hotel near the bridge which divides 

 the Lea. When preparing this paper I went exhaustively 

 through the genus, and found that Strobl had described it as 

 new in 1899 from a single male caught at Alge9iras, near 

 Gibraltar, under the name of U. andalusiacus. I do not feel 

 the least doubt about its correct identification, but having 

 taken it in large numbers in both sexes, a few additional 

 notes about it may be of advantage. 



It is undoubtedly one of the D. nuhilus group, the species of 

 which bear a peculiar downy pubescence on the face, while the an- 

 tennae are almost wholly black, and usually the femora bear some 

 dusky markings. The other known European species of this group 

 are D. nubilus, latilimhatus, excisus and alhifrons, all of which ought 

 to occur in Britain ; of these all have the front femora entirely yellow, 

 the hind femora with a dusky spot near the tip (faint in D. latilimha- 

 tus), and the hind tibia) darkened at the tip. The male of D. nubilus 

 is also easily distinguished by the yellow fringed squamae, and D. 

 latilimbatus by the long thin hair at the tip of the front tibiae. Strobl's 

 description is so good that I would only say that I consider the arista 

 longer than the antennae, and I would call the dark portion of the 

 front femora light brownish-black rather than black, in fact, in some 

 specimens it is little more than dusky ; the bristles on the basal joint 

 of the hind tarsi are two strong ones above and one on the front side. 



Female with the face much broader, white with almost conspicuous 

 white pubescence ; frons leather dusted with white ; thorax more 

 coppery ; front femora usually nearly all orange, though sometimes a 

 faint darkening occurs on the upper side ; front coxae less darkened, 

 being sometimes so only at the base, and posterior coxae with just the 

 tip brownish-orange ; base of the hind tarsi obscurely orange, though 

 sometimes very obscurely so ; antennae sometimes obscurely reddish 



